Even though we're comfortable with sitting on a toilet seat that someone just vacated (and vacated their bowels on), it still comes as a surprise just how warm that seat is—the ass must be a bit higher than 98 degrees. This thermochromic toilet seat, however, lets you know exactly how warm the seat is, with a bonus effect of showing you exactly which part of the seat was in contact with the previous occupant. As you can see from the picture, the man before was a widey. Almost as good as the hypercolor shirts of yore, which let us know of Kelly's extracurricular activities in a visual manner. [Canadian Design Resource via Boing Boing]